Die for forming articles from plastic material



(No Model.)

H. E. MI ILLER. DIE FOR FORMING ARTICLES FROM PLASTIC MATERIAL.

Patented De o. ,27, 1392;

Fly. 1.

ATTORNEY.

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UNITED STATES PATENT nron.

HORACE E. MILLER, OF NEWARK, NEW JERSEY.

DIE FOR FORMING ARTICLES FROM PLASTIC MATERIAL.

SPECIFICATION forming part of Letters Patent No. 488,570, dated December 27, 1892.

Application filed May 11, 1892.

To all whom it may concern:

Be it known that I, HORACE E. MILLER, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Dies for Forming Articles from Plastic Material, of which the following is a specification.

The invention relates to improvements in dies for forming articles from plastic material, and consists of a stationary section containing one part of the matrix and a movable section provided with the remaining part of the matrix and composed of two portions, one being hinged to the other and connected by a link with a hand lever by means of which said hinged portion may be opened or closed and locked in its closed position, all as hereinafter more particularly described and as illustrated in the accompanying drawings, in which Figure 1 is a central vertical longitudinal section of a die embodying the elements of the invention, the movable section of the die being shown closed and in contact with the stationary section; and Fig. 2 is a like view of same, the movable section being illustrated in its elevated position with its hinged portion open.

In the drawings A designates a frame supporting the die, which consistsgf the stationary section B, containing one part of the matrix, and the section 0 adapted to have a vertical movement in the aperture D and being in the form of a plunger. The lower part of the die section 0 is composed of two portions, lettered E, F, respectively, the former being hinged to the latter by means of the pin G and the lower surface andlower meeting faces of said portions constituting the upper part of the matrix.

The hinged portion E of the die section 0 is adapted to be opened and closed by means of the lever H and link I, the former passing on each side of the die and its inner end being secured on a pin J, while the linkI is attached at one end to the hinged portion E and at the other to the outer end or handle of the lever The relation of the link and le ver to each other and to the die is such that when the hinged portion E is closed the lever Serial No. 432,574. (No model.)

and link will be in a horizontal position with their pivots on the same plane, as shown in Fig. 1, in which condition they will efiectually resist any outward pressure exerted against the portion E during operation of the molding. After the molding has been completed and it is desired to remove the newly formed article, the upper die section may be elevated and-the outer or handle end of the lever H raised, thus opening the hinged portion E, as as shown .in Fig. 2, and freeing the article.

In the operation of the die, the upper section 0 being elevated a suitable distance from the lower section-and the hinged portion E being closed and locked by means of the lever H and l'nk I, the celluloid or other material to be given form is, in proper quantity, placed on the lower die section B and the section 0 caused to descend until the tWo sections of the die come into face to face contact and the plastic material is forced into every part of the matrix, whereupon the section 0 will be elevated and the hinged portion E opened to free the article, as above described. It may be necessary or expedient to have the material heated in order to cause it to flow into all parts of the matrix and issue therefrom in satisfactory condition or to heat the die to facilitate this result, but these are matters which will be determined according to the nature of the material to be treated, the form of the matrix and other circumstances.

The die illustrated has a matrix adapted for the formation of collar or cuff buttons, but it must be understood that the invention is not limited to the production of any specific article nor for use in the treatment of any special material.

In an application for Letters Patent of the United States of. even date and filed herewith (Serial No. 432,573,) I describe and claim an apparatus employing dies consisting of a stationary section .and a movable section, and means for elevating and depressing the movable section during the operation of molding. The die sought to be protected herein may be employed in connection with the apparatus shown in said application, or the means for elevating and depressing the upper die section described in said application or any other suitablelappliance may be made use of for the purpose of imparting movement and power to the upper die section claimed in this application.

If preferred a spring M may be provided to exert a downward tension on the outer end of the lever H, as shown in Fig. 2, but I do not limit the invention to the use of such spring nor to the form and proportions of the parts illustrated.

What I claim as my invention and desire to secure by Letters Patent, is:

1. A die having one of its matrix-sections composed of two portions hinged to each other and provided with a hinged lever and link for opening or closing and locking said portions, 15 substantially as set forth.

2. The die consisting of the section B and movable section C, the latter being composed of the portions E, F, and provided With the lever H and link I, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 9th day of May, A. D. 1892.

HORACE E. MILLER.

Witnesses:

OHAs. O. GILL, ED. D. MILLER. 

